A cobpobaxioh



Aug. 24 1926.

B. D. BARTON rnnnaa ron CBNTRIP'UGAL PuuPs Original Filed Jan. 28, 1924INVINTQI Ra a an 24,1 26.

f 7 UN TED/STATES.

PAT NT omen.

nnrn. nanror. 01' um! m i iamen. America are annrcar mconmmrnarrummncmm, aconoamon or Original Io. nausea, time August at. me, no} team,fled January aa, use.

. fled January 11, lerlalje. an,m

This invention relates to improvements in primers for centrifugal pumps.

L ly present improvements are espeeiall deslgned by mefor use inconnection 5 my pump attachment for motor vehicles shown in mapplication for Letters Patent filed Decem r 7, 1923, Serial No. 679,236and I have illustrated the same as in practice in such apparatus. Myimprove. 1

temporary exhaustion of the source of sup-.

1 ahird, to provide an im rov'ed I means of the class descri whichrequires no attention on the part of the operator'and is not likely tobecome inoperative or get out of repair when in use.

Objects pertaining to details and econao omies of construction andoperation definitel appear from the detailed description to ollow. p Iaccomplish the objects of my invention by the devices and meansdescribed the as following specification. The invention is clearlydefined and pointed out in the claims.

A structure which is a preferred embodiment of my invention ifiacl'earlyfillustrated in the accompanyin wmgs' orming a 40 part of thisapplicatfim, in which:

Figure'I is a. fragmentary perspective view of a tractor equip d with apump attachment embodying e features of my inven tion. as 'Figure H isadetail view partially in vertical'section on a line corresponding toline 2-2 of III.

Figure is a plan view of the parts shown in F' H, the suction conduitbesection v the drawing similarreferencenumeralsrefertosimilarpartsinalloftheviewsandthesectionalviewistakenlookinginthe' .of the conduit 9, theconnection 9 Application to:

mnm nmnntndn ini m the to 1 re resents a tractor y and 2 the engi1athereof.

-The intake manifold 8 of the engine is,

shown in conventional form.

The mi: 4 is an intake ban 'dis lhai ge 6. pump is mounted upon thetractor by means of the supportmglframe 7, the frame illustrated 'be mgthat own in my above mentioned apphcation.

I provide a float chamber 8.which is connected to the interior of thepump b means to the bottom of the float chamber and'to the pump at acentral point. The. top of the float chamber is connected to the inmanifold by the conduit 10.

rovided an The float 11'has a stem 13 guided by the guide 14 at thebottom and in the p 15 m the top 16 of the float chamber. passage 150 0into the chamber and also .to the outsi e thereof. It is provided withvalve seats 17 and 17 for'the valves 18 and 19carried by the stem 13 andadapted to seat alternately, that is, when the suction valve 18 isclosed by the raising of the float, the-vent valve 19 is opened and viceversa.

The conduit is connected to this passage by a passage 20 formed in thetop 16 and having a valve seat 21 therein for the ball check valve 22.This insures the maximum lift in the primeras the valve seatseffectively with each impulse and a steady vacuum is maintained.

With the arts thus arranged, the opera: tion is as oHows: When theengine is started the suction in the intake manifold will draw the airfrom the'pump and the suction line, of course, that the line is at thattime sealed by water, water is carried up. into the and into the floatchamber, e oat and closing the valve 18, thus prevent' ing drawn intothe engine. e vent valve 19 is opened so that air is drawn from theoutside into the engine through the conduit, the main object of thishowever, being to prevent the valve being hung up by the suctionin the'event that the water should be drawn from the float chamber.

' The check valve 22 is provided to prevent the water bean outlet in itsup a backward current pipe in theeventthatthesuctionwrthmthepump shouldbe greater than'that m the intake manifold.

My improved primer is very eflicient and is m automatic in itsoperation. By the float chamber to the center of the pump the pump maybe primed while the automatically e primin operation. For instance,should there be in the suction line or breaks in the suction admitthepump does not the air is constantly exhausted while the pump is in oration. This'also avoids the ty for a use of valve in the suction line,the pump primed without the use of such valve. valve 9! is. rovided inthe conduit 10 after the pump has been rimed this conduit canbe-manually closed, it is found that in practice it is not b 2; do this,

Ihave' ustratedanddescribedm imro in an t which have satisfactory, Ihave not atptcd illustrate certain modifications adtgations which Icontemplate as I believe disclosure made will enable thoseskilledinthearttoembodyoradaptmy im ts as may be desired.

LInastructure oftheclass described, the combination with a a centrifugalpump mounted thereon, an internal comustaonengine mounted on thechassis, and

connections for driving said pump from said e; of afloat chamber ha' itslower and connected to'said pump an its upper end connected. .a suctionline to the intake manifold 0 said engine, a float in said chamber, anda valve in said float chamber controlled bysaid float for closing saidsuc tion line connection; and a check valve to prevent back flow of gasfrom the manifold mto the float chamber, said check valve beunaflectedby the operation of the float. In a 'diructure of the class described,the combination with a chassis, a centrifugal ump mounted thereon, aninternal combusn mounted on the chassis and connections for dri said umfrom said e; of a float amber vmg an outlet in its lower end connectedto said pum and end connecte by a suction line to the mtake manifold ofsaid engine; a float in said chamber; a valve in the float chamber forsaid suction line controlled by said float; and a separate vent p-valvealso'controlled by said float for admitting air into the suction linewhen the suction line valveis closed; saidvent valve opening and closingalternately with said suction line valve.

8. In a structure of the class described,

'an outlet in its up tomatically opened by the combination with a acentrifugal pump mounted thereon, an internal combustion engine mountedon the and connections for dri said plump from said engine; of a floatamber ving an outlet in its lower and connected to said pum and p andconnecte by a suction line to the intake manifold of said engme; a floatin said chamber; a valve in the float chamber for said suction linecon-' trolled by said float; a vent valve also controlled by said floatfor air into the suction line when the suction e valve is closed; saidvent valve openinguand closmg alternatel with said suction e valve; anda return valve in said suction line.

4. In a structure of the class described,-

of-said engmgi a float in said chamber; a

valve controll by said float for closing the suction line; and aseparate valve also controlled by the float adapted to admit air intothe suction line when the suction outlet valve is closed.

5. Ina structure of the class described,

the combination with a centrifugal pump and an internal combustionengine for driv-' ing said pump; of a float chamber having an 0connected to said pump and an opamng connected by a suction line to theintake manifold of said engine; a float in said chamber, a valvein saidchamber for closing said suction line 0 bysai float, and a vent v vealso controlled b said float and adapted to admit air into a saidsuction line when the suction line valve in the float chamber is closed,said.

vent valve opening and closing alternately with said suction line valve.

6. In a structure of -the class described, the combination with acentrifugal pump and an internal combustion engine for driving saidpump; of a' float chamber having an opening below. the float connectedto said pump, and an opening above the float connected h a suction lineto the intake manifold 0 said engine; a float in said chamber; a valvein said chamber for the suction lme ope and'a vent valve a v controlledb .the' float and adapted to admit air into t a suction line when thesuction line valve is closed,

' controlled by said float;

ning controlled said vent valve'being automatically closed 7. Ina-structure of the class described, the

combination with a centrifugal pump and an internal combustion enginefor driving said pump; of a float chamber having an opening adjacent itslower end connected to said pump; and an opening adjacent its upper endconnected by a suction line to the intake manifold of said engine; afloat in said chamber; a valve in said chamber for said suction lineopening controlled by said float; and a vent valve controlled by thefloat adapted to admit air into the suction line when the suction linevalve in the float chamber is closed; said vent valve beingautomatically operated by the float to open and close alternately withsaid suction line closing valve; and a return check valve in saidsuction line.

8. In a structure of the'class described, the combination with acentrifugal pump and the intake of an internal combustion engine, of afloat chamber connected to said engine intake and to said pump at acentra point thereof, a float in said chamber, and a valve for saidintake connection actuated by said float.

9. In a structure of the class described, the combination with acentrifugal pump and an internal combustion e 'ne for driving said ump,of a float cham r having its lower en connected to said pump at acentral point thereof and its upper end connected to the intake of saidengine, a float in said chamber,and a float chamber valve flor saidintake connection controlled by said cat.

10. In a structure of the class described, the combination with acentrifugal pump and an internal combustion engine for driving saidpump, of a float chamber having its lower end connected to said pump ata central point thereof and its upper end connected to the intake ofsaid engine, a float in said chamber, a float chamber valve for saidintake connection controlled b said float, and a return check valve insaid intake connection. v

11. In a structure of the class described, the combination with acentrifugal pump and an internal combustion engine for driving saidpump, of a float chamber having its lower end-connected to said pump ata central point thereof and its upper end connected to the intake ofsaid engine,=i""float in'said chamber, a float chamber valve for saidintake connection controlled by said float and a vent valve for saidintake connection controlled by said float and opening and closingalternately with said float chamber valve.

12. In a structure of the class described,

the combination with a centrifugal pump and an internal combustionengine for driving said pump, of a float chamber havingv its lower endconnected to said pump at a central point thereof and its upper endconnected to the intake of said engine, a float in said chamber, a floatchamber valve for said intake connection controlled b y said float, avent valve for said intake connection controlled by said float andopening and closing alternately with said float chamber valve, and areturn check valve in said intake connection.

13. A float chamber having an inlet opening in its lower end, an openingin its upper end adapted to be connected to a suction line, and an airpassage connecting with the suction line; a float in said chamber, a

valve in said chamber controlled by said float for closing the openingin said chamber which communicates with said suction line openin and avent valve in said assage also c ntrolled by said float to adinit airthrough said ,air passage into the suction line when the suction linevalve in the float chamber is closed, said vent valve opening andclosing alternately with said suction line valv 14. A float chamberhaving an opening in its lower end adapted to be connected to a pump, anopening in its upper end adapted to be connected by a suction line tothe manifold of an internal combustion engine and an air passageconnecting with the suction line a float in said chamber; a valvecontrolled by said float for closing the suction line openin and a valvefor said air passage contro led by the float adapted to admit air intothe suction line through said air passa when the suction outlet valve isclose 15. A float chamber having an opening adjacent its lower endadapted to be connected to a ump, an opening adjacent its upper end aapted to be connected to a suetion line, and an air assage connectingwith the suction line; a oat in said chamber; a valve in said chamberfor said suction line opening controlled by said float; a vent valve insaid passa e also controlled by the float adapted to a mit air into thesuction line when the suction line valve in the float chamber is closed;said vent valve bein automaticall operated by the float an opening anclosing alternately with said suction line valve; and a return checkvalve in the suction line.

BEN D. BARTON.

